Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: qual é a posição onde o jogador é williams, bernie bernie williams
 ###Tabelas: CREATE TABLE oldest_first-class_cricketers (oldest_first-class_cricketers_id AUTO_INCREMENT PRIMARY KEY, Rank INT, Name VARCHAR, Team(s) VARCHAR, Birth date VARCHAR, Death date VARCHAR, Age (as of 1 February 2014) VARCHAR, Nationality VARCHAR) CREATE TABLE end-user_power_tariffs (end-user_power_tariffs_id AUTO_INCREMENT PRIMARY KEY, User VARCHAR, Unit (kWh)/Time range VARCHAR, Tariff ( Rs. /kWh) VARCHAR, Fixed Charge ( Rs. /kWh) VARCHAR, Fuel Adjustment Charge (% of Total Energy Charge) VARCHAR, Max. Demand Charge ( Rs. /kVA) VARCHAR) CREATE TABLE w (w_id AUTO_INCREMENT PRIMARY KEY, Player VARCHAR, No.(s) VARCHAR, Height in Ft. VARCHAR, Position VARCHAR, Years for Rockets VARCHAR, School/Club Team/Country VARCHAR) CREATE TABLE banned_substances (banned_substances_id AUTO_INCREMENT PRIMARY KEY, Athlete VARCHAR, Nation VARCHAR, Olympics INT, Substance VARCHAR, Punishment VARCHAR) CREATE TABLE lpga_tour_record (lpga_tour_record_id AUTO_INCREMENT PRIMARY KEY, Year INT, Wins INT, Earnings ($) VARCHAR, Rank INT, Scoring average INT)  
SELECT Position FROM w WHERE Player = Williams, Bernie Bernie Williams